<div class="panel">
    <form action="{:AddonU('CtiTester/seat_trans_edit_save')}" method="post">
        <ul>
            <li>
                <label>转接号码：</label>
                <input type="text" name="exten" placeholder="转接号码" required/>
            </li>
            <li>
                <input type="submit" value="转接"/><input type="button" value="关闭" class="btn-close-dialog"/>
            </li>
        </ul>
    </form>
</div>